By-pass valve.



A. O. RUTZ.

BY-PASS VALVE. APPLICATLON FILED APR. 14. 1916.

1,242,245. I Patented 0ct. 9,1917.

ARNOLD O. RU'IZ, OF MILWAUKEE, WISCONSIN.

BY-PASS VALVE.

Specification of Letters Patent.

Patented Oct. 9, 191 '7.

Application filed April 14, 1916. Serial No. 91,125.

To all whom it may concern:

Be it known that I, ARNOLD 0. Run, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in By- Pass Valves; and I do hereby declare that the following is a full, clear, and exact description thereof.

The present invention is directed to new and useful improvements in fluid valves of the spring controlled push button type, and more particularly of the type embodied in my application for patent filed March 8rd, 1915, Serial No. 11931, and adapted for use in conjunction with flash igniters for gas stoves and the like.

It is the object of the present invention to improve the structure of the aforementioned tygie of valve with a view to eliminating the d1 cult by-pass bores of-the valve casing, and to this end it is more specifically the object to embody the by-pass means and its valve control in the ,valve cage structure, to thus render the entire valve head and bypass structure an independent unit from the casin It is further the object to associate the bypass means with the main valve structure in such manner as to detract in no way from the efiiciency and convenience of operation of the main valve member, and further in such manner as to permit ready adjustment of the valve control of the by-pass.

It is still further an object to provide a novel valve control means for the by-pass within the stem of the main valve.

With the above and other objects and advantages in view, the invention resides more particularly in the novel combination, arrangement and formation of parts more particularly hereinafter described and articularly pointed out in the appended claims.

Fig. 3 is a transverse sectional view taken on the line 3-3 ofFig. 2, and

Fig. 1 is a view similar to Fig. 3, but showing a still further modification of the by-pass valve-pin.

Fig. 5 is an enlarged sectional view of the upper portion of the valve stem shown in Fig. 4.

Referring now more particularly to the accompanying drawings 5 designates a valve casing having a transversely disposed well 6 formed centrally therein and having inlet and outlet ducts 7 and 8 respectively communicating therewith, these ducts being oppositely inclined from the ends of the casing whereby the inlet duct communicates with the well adjacent its bottom and the outlet duct communicates with the well adjacent its top. A cylindrical valve cage 9 is threaded into the well, and is provided at its bottom with a valve seat 10 and in its periphery within thewell with a circumscribing recess 11 which forms a chamber communicating with the outlet duct 8, the shell being provided with openings 12 in its wall communicating with this recess whereby the normal flow of fluid through the valve passes through the inlet duct 7, the bore of the cage, the openings 12 and the outlet duct 8. Slidably passed through the cage is a valve stem 13, which has its lower end enlarged to form a valve head 14 normally abutting the seat 10 and which has threaded on its upper end a button '15 having its shank slidable in the bore of the cage. The cage is provided above its annular chamber with an annular packing seat 16 on its inner periphery. Suitable packing means 17 rests on this seat and an expansile spring 18 surrounds the stem between the button and the said packing.

All of the structure aforedescribed is embodied in my application for patent aforementioned.

Taking up now the improved byass means and the valve control therefor, w ich forms the subject-matter of this present application, the valve stem is provided with a longitudinal bore 19 which extends through the head 14: thereof, and the stem is further provided adjacent and below the packing seat 16 with a transverse bore 20 commum eating with its longitudinal bore, whereby when the main valve is closed, a by-pass flow of fluid is had through these bores.

The valve for regulating this by-pass flow is of the needle type and comprises an elongated pin 21 disposed in the bore 19, which, as is noted, extends entirely through the stem and this bore 19 is provided below the transverse bore 20 and at the extremity of the valve pin with a reduced portion 21, which forms a seat in conjunction with the valve pin, the upper end of the valve pin being enlarged and threadedly engaged in the bore 19 whereby it may be held in various adjusted positions, and to facilitate manipulation for such adjustment the pin is provided with a head 22 disposed in a passage 23 formed in the button 15. By the aforementioned structure, the by-pass bores and the valve control therefor may be readily and more economically provided, in contradistinction to structures wherein such bores are formed in the valve casing.

A desired feature in the stucture of my previous application was that the valve and its cage constituted an entirely separate unit with-respect to the valve casing, and this advantage is enhanced in the present structure, for in this structure the by-pass and its valve form a part of the main valve unit.

Figs. 2 and 3 illustrate a modification of the valve for the by-pass, and in these views there is shown the usual valve stem provided with the longitudinal and transverse by-pass bores 19 and 20, as in the structure aforedescribed the longitudinal bore, however, being of equal diameter throughout. A valve pin 24; is provided and passed through the bore 19, the lower portion of this pin being cut away on one side to provide a substantially semi-circular cross-section, this cut away portion extending above the transverse bore 20. Thus upon rotating the pin, the adjacent end of the bore 20 may be restricted with respect to the passage between the lower end of the pin and the opposite wall of the bore 19, and thus adjustments of the by-pass flow may be had, it being noted that the pin is resillently bowed whereby a frictional grip is exerted to hold it against undesired movement, although in some instances this resilient bowing may not be necessary inasmuch as the normal friction of the pin in the bore would prevent accidental movement. Adjustment of the pin is provided for by a head 25 thereon which is countersunk in the valve stem button 15.

While I have described by present invention as in connection with valves for flash igniters of gas stoves, it is obvious that the present invention may have valuable ap lication in other valve connections, and t at various modifications of structure other than the modifications shown may be employed within the scope of the appended claims.

Fig. 4 illustrates a further modification of the by-pass valve which permits an initial adjustment of the valve pin with respect to its seat in the main valve stem and its screw thread attachment with the valve stem, it being appreciated that in the commercial application of the present invention it would be very diificult to provide an exact measurement of the various parts so that such parts when assembled would provide a proper position of the end of the by-pass valve pin with respect to its seat, diificulty being encountered 'in this respect particularly in view of the screw thread connection of the main valve stem 13 and the operating button 15, with which it is in some instances desired to associate the bypass valve-pin in such manner as to procure a lock against accidental unscrewing of the button. I

All of this modified structure is illustrated in Fig. 4, wherein the usual valve stem and head 13 and 14: respectively and button 15 are provided, the stem and head being provided with the usual by-pass bores 19 and 20 as shown in Fig. 1.

In this structure the by-pass valve pin is made in two telescoping sections 31 and 32 respectively, the outer section being uppermost and threadedly passed through the cap and threadedly engaged in the upper portion of the longitudinal bore 19. This upper portion carries a head 33 which seats in a countersink 3a in the button. In assembling this structure, the button 15 is screwed on the stem and the by-pass valve pin is screwed into the stem and button, with its lower section 31 extended in its telescoping relation. As the pin is screwed to its limit of rotative movement inwardly, the lower section 31 seats on the seat formed by the reduced portion 21, and .further movement of the upper section telescopes the sections. Thus a positive determinatlon is had of the closing position of the valve pin with respect to its seat, and inasmuch as the sections bindingly or frictionally engage in moving to such telescoping relation, the upper portion of the pin may then be rotated outwardly to carry the lower portion therewith and procure a proper adjustment of flow through the by-pass. It is further noted that the size of the screw threads of the valve pin and the cap 15 difier, and thus a locking arrangement is procured which prevents accidental movement of either the cap or valve pin.

I claim:

1. The combination in a valve including a casing having a valve seat, a valve head in coaction with said seat and a stem for actuating the head and extending outwardly of the casing, of the stem being provided with a transverse bore, the stem and head being provided with a longitudinal bore communicatin with the first bore and having a reduce ortion between said first bore and the va ve head, and a valve pin threadedly engaged in the second bore for coaction with said reduced portion and comprising an inner section and an outer section, said outer section frictionally telescopingly engaging said inner section, and

threadedly connected with the stem.

2. The combination in a Valve including a casing having a valve seat, a valve head for coaction with said seat, a stem for actuating the head and extending outwardly of the casing, and a cap member threaded on the stem, of the stem provided with a transverse bore, the stem and head being provided throughout with a longitudinal bore oommunicating with the first bore and having a reduced portion between said first bore and the valve head, a valve pin passing through the cap member and disposed in the second mentioned borefor coaction with said reduced portion thereof, said valve pin being threadedly engaged with said stem, the valve pin being provided with a head at its outer end and the threads of the cap and valve pin being of different nature whereby to lock the cap on the stem.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county-of Milwaukee and State of Wisconsin, in the presence of two witnesses.

ARNOLD o. RUTZ.

Witnesses:

FRANK S. RATCLIFFE, M. E. DOWNEY. 

